#172979#172979

#172979 is a dark, vivid blue. Relative luminance 0.031; OKLCH L 32.5% C 0.138 H 267.8°. Best body text is #FFFFFF at 12.89:1 contrast (WCAG AA passes).

Color values

HEX	#172979
RGB	rgb(23, 41, 121)
HSL	hsl(229, 68%, 28%)
HSV	hsv(229, 81%, 47%)
CMYK	cmyk(81%, 66.1%, 0%, 52.5%)
CIE-LAB	lab(20.63, 24.29, -47.52)
CIE-LCH	lch(20.63, 53.37, 297.07°)
OKLab	oklab(32.52% -0.0053 -0.1375)
OKLCH	oklch(32.52% 0.138 267.8)
XYZ	xyz(4.5963, 3.1480, 18.4508)
Luminance	0.0315 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172979 #796717

analogous

#175A79 #172979 #361779

triadic

#172979 #791729 #297917

tetradic

#172979 #79175A #796717 #177936

square

#172979 #79175A #796717 #177936

split-complementary

#172979 #793617 #5A7917

monochromatic

#05091A #0D1846 #172979 #213AAC #3251D8

Accessibility & contrast

On white

12.89

#172979 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.63

#172979 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172979

12.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172979	#FFFFFF	#000000	##FFFFFF
##172979	1.00	12.89	1.63	12.89
#FFFFFF	12.89	1.00	21.00	1.00
#000000	1.63	21.00	1.00	21.00
##FFFFFF	12.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00367C

Deuteranopia (green-blind)

#002D77

Tritanopia (blue-blind)

#003E4D

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #172979;
/* rgb */ color: rgb(23, 41, 121);
/* oklch */ color: oklch(32.5% 0.138 267.8);

Tailwind

colors: {
  custom: {
    50: '#6662a1',
    500: '#172979',
    950: '#000000',
  },
}

SCSS

$custom: #172979;
$custom-light: #6662a1;
$custom-dark: #000000;

JSON

{
  "hex": "#172979",
  "rgb": {
    "r": 23,
    "g": 41,
    "b": 121
  },
  "hsl": {
    "h": 228.98,
    "s": 68.056,
    "l": 28.235
  },
  "oklch": {
    "l": 0.32521,
    "c": 0.13759,
    "h": 267.8
  },
  "luminance": 0.03149
}

Semantic roles & 50–950 ramp

primary

#172979

secondary

#AE993E

accent

#CB3DEB

background

#F6F5FA

surface

#EBEAF3

border

#C6C6CD

text

#07050F

muted

#7A797F

Preview Lab

Preview with #172979

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →